Fix invocation with Python 3.9 (#1798929)

- Recommend Python 3.9

python-tox.spec

@@ -8,7 +8,7 @@
 %global pypi_name tox
 Name:           python-%{pypi_name}
 Version:        3.13.2
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Virtualenv-based automation of test activities
 
 License:        MIT
@@ -19,6 +19,10 @@ Source0:        %{pypi_source}
 # Rebased from https://github.com/tox-dev/tox/pull/1368
 Patch0:         1368.patch
 
+# Run py39 env with Python 3.9
+# https://bugzilla.redhat.com/show_bug.cgi?id=1798929
+Patch1:         py39.patch
+
 BuildArch:      noarch
 
 %description
@@ -55,6 +59,7 @@ Recommends:     python35
 Recommends:     python36
 Recommends:     python37
 Recommends:     python38
+Recommends:     python39
 Recommends:     pypy2-devel
 Recommends:     pypy3-devel
 Recommends:     python2-devel
@@ -146,6 +151,10 @@ rm -rf .path
 %{python3_sitelib}/%{pypi_name}-%{version}-py%{python3_version}.egg-info/
 
 %changelog
+* Thu Feb 06 2020 Miro Hrončok <mhroncok@redhat.com> - 3.13.2-3
+- Fix invocation with Python 3.9 (#1798929)
+- Recommend Python 3.9
+
 * Fri Jul 26 2019 Fedora Release Engineering <releng@fedoraproject.org> - 3.13.2-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild